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Technical library

Twelve reference notes covering the calculations our engineers actually use. Published because a client who understands the sizing basis makes better decisions than one who does not.

Reference notes
12
Standards summarised
12
Minutes of reading
138
No registration required
Free
Section 01

Filtration Fundamentals

Section 02

Gas Separation

Section 03

Materials

Section 04

Dust Collection

Section 05

Life Sciences

Section 06

Air Filtration

Section 07

Safety

Section 08

Operations

Standards index

Twelve standards, summarised in a line each.

What each standard actually governs — useful when a specification cites one and you need to know whether it applies to your duty.

ISO 16889Multipass filter efficiency
The test that produces a beta ratio and therefore an absolute rating.
ISO 12500Compressed air filter testing
Oil aerosol, vapour and particulate removal, measured isokinetically.
ISO 8573-1Compressed air purity classes
The class system used to specify instrument and process air quality.
ISO 16890Air filter classification
Fractional efficiency against ePM1, ePM2.5 and ePM10 fractions.
EN 1822HEPA and ULPA classification
Efficiency at MPPS with individual element scan testing.
EN 14491Dust explosion venting
Vent area calculation from measured Kst and Pmax.
ASME VIIIPressure vessel construction
Division 1 and 2 rules governing design, fabrication and inspection.
NACE MR0175Sour service materials
Material and hardness requirements for H₂S-containing environments.
ISO 4406Hydraulic fluid cleanliness
Particle count coding used to specify oil cleanliness targets.
ISO 14687Hydrogen fuel quality
Purity thresholds for fuel-cell grade hydrogen.
ASTM F838Sterilising filter validation
Bacterial retention testing with Brevundimonas diminuta.
ISO 14644Cleanroom classification
Airborne particulate cleanliness classes and testing methods.

Technical library

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